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EUROPAR
2007
Springer

Esodyp+: Prefetching in the Jackal Software DSM

12 years 6 months ago
Esodyp+: Prefetching in the Jackal Software DSM
Abstract. Prefetching transfers a data item in advance from its storage location to its usage location so that communication is hidden and does not delay computation. We present a novel prefetching technique for object-based Distributed Shared Memory (DSM) systems and discuss its implementation. In contrast to page-based DSMs, an object-based DSM distributes data on the level of objects, rendering current prefetchers for page-based DSMs unsuitable due to more complex data streams. To predict future data accesses, our prefetcher uses a new predictor (Esodyp+) based on a modified Markov model that automatically adapts to program behavior. We compare our prefetching strategy with both a stride prefetcher and the prefetcher of the Delphi DSM system. For several benchmarks our prefetching strategy reduces the number of network messages by about 60 %. On 8 nodes, runtime is reduced by 15 % on average. Hence, network-bound programs benefit from our solution. In contrast to the other predict...
Michael Klemm, Jean Christophe Beyler, Ronny T. La
Added 07 Jun 2010
Updated 07 Jun 2010
Type Conference
Year 2007
Where EUROPAR
Authors Michael Klemm, Jean Christophe Beyler, Ronny T. Lampert, Michael Philippsen, Philippe Clauss
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